High-pressure liquid chromatography (HPLC) is a method used in chemistry and biochemistry to purity chemical substances. The pressures used in this procedure range from around 500 kilopascals (500,000 Pa) to about 60,000 kPa (60,000,000 Pa). It is often convenient to know the pressure in torr. If an HPLC procedure is running at a pressure of 4.43x10 Pa, what is its running pressure in torr? Express the pressure numerically in torr. ▸ View Available Hint(s) 4.43x10 Pa = IVE ΑΣΦΑ ? torr

High-pressure liquid chromatography (HPLC) is a method used in chemistry and biochemistry to purity chemical substances. The pressures used in this procedure range from around 500 kilopascals (500,000 Pa) to about 60,000 kPa (60,000,000 Pa). It is often convenient to know the pressure in torr. If an HPLC procedure is running at a pressure of 4.43x10 Pa, what is its running pressure in torr? Express the pressure numerically in torr. ▸ View Available Hint(s) 4.43x10 Pa = IVE ΑΣΦΑ ? torr

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

The pressure in a constant volume thermometer is 0.800 x 102 Pa at 400 K and 0.600 x 105 Pa at 300 K. What is the temperature in K when the pressure is 0.500 x 105 Pa?
What are the individual units of A, B and C of the Antoine equation? (to achieve the same dimensions)
Methane reacts with O₂ according to the equations CH4 (g) + O2 CO₂ (g) + 2 H₂O (g) CH4 (g) + O2 + O₂ CO (g) + 2 H₂O (g) Assume the volume of one cylinder of an automobile engine is 2,000 mL. Pre-heated air enters the engine at 50°C and 1 atm of pressure. (a) how many grams of methane should the fuel injection system send to the cylinder to consume 80% of the O2 in the air. Assume air is 21% by volume O2 and 79% by volume N₂. (b) Calculate the partial pressure of CO2 in the combustion or exhaust gas. Assume the temperature of the exhaust gas = 500°C and the exhaust gas contains CO2 and CO at 9:1 mass ratio.
If the partial pressure of N2 is 3.25 x 105 and the partial pressure of Ne is 3.00 x 105 Pa in a given mixture what is the mole fraction of Ne(XNe)?
7. Unknown Pressure P Fluid of interest (Gas in most cases)- Po Ambient Fluid (Atmospheric pressure in most cases) Reference Fluid Density p (Liquid, e.g. water or mercury) Gage Pressure AP - P-Po - rgh In a manometer, the pressure p inside the apparatus is given as p = pex + pgh, where pex(po) is the external pressure, p is the mass density of the liquid in the tube, g = 9.806 m/s² is the acceleration of free fall, and h is the difference in heights of the liquid in the two sides of the tube. (The quantity pgh is the hydrostatic pressure exerted by a column of liquid. i) Suppose the liquid in the manometer is Hg, Pex is 760 torr, and the open side is 10.0 cm higher than the side connected to the sample. What is the pressure of the sample? The mass density of Hg at 25°C is 13.55 g/cm³. (Assume 25°C.)
Calculate the pressure at the base of a mercury column 400 mm high. The mercury density at room temperature is 13.5951 g / cm3.Express the result in column, atmosphere, psi, pascal, and bar units. Calculate the pressure exerted on the drum skin of a diver located at a depth of 20 feet below sea level. Assume that the seawater density is: 1 gr / cm3. Calculate the molar volume of Cu2Te. Express this volume in mol/liter and mol/cm 3 units. ( rm=7.270 g/cm3) Use the ideal gas law and the van der Waals equation to calculate the pressure of ammonia gas at a temperature. T = 300 K the molar volume is V = 24 liters / mol
A sample of oxygen gas was found to have a pressure of 94kPa when the temperature was 19°C. What can its pressure be, in kPa , expected to be if the temperature is 12.5°C? Round off your answer to 2 decimal values
Let’s see if we can derive an alternative expression for the compression factor for the van der Waals equation of state: P = [RT / (Vm−b)] − (a / V^2m) . Please demonstrate: Z = PVm / RT = 1 − [a ∙ (Vm − b) / RTV^2m] + (P ∙ b / RT) Hint: start by multiplying the left and right-hand sides by (Vm – b)
Q3: A unit cell of diamond structure belongs to the cubic crystal system and contains eight atoms of the same type and their positions are as follows. (000) Compute the structure factors Fok and |F|2
3
2
The density of silver (Ag) is 10.49 g/cm^3 and that of Nickle (Ni) is 8.9 g/cm^3. A comparison of the volumes (V) of 50 gram samples of each metal will show that? (A) Vag > Vni (B) Vag < Vni (C) Vag = Vni (D) there is no predictable relationship between volumes